Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. ‘Å
2. â
3. ˆÃ
4. Õ

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ